Anodising is an electrolytic passivisation process used to increase the thickness of the natural oxide layer on the surface of metal parts, especially aluminum.  The anodised aluminium layer is grown by passing a direct current through an electrolytic solution, with the aluminium object serving as the anode (the positive electrode). 

Why Aluminium Anodising

Aluminium anodising increases corrosion resistance, especially in areas with extreme climatic conditions (seaside areas with high levels of humidity and extended periods of sunshine) and provides better adhesion for paint. This happens because anodising transforms the aluminium surface and creates a very durable external coating. This is why anodised aluminium profiles are the no1 choice for modern, state of the art building constructions. 

OXAL offers a wide range of colour choices, additionally to the "traditional" bronze and golden ones. For example, we provide many tints of Inox, and a variety of those tints when combined with mechanical finishing of the surfaces.

See anodising applications, as well as our reference colours.